Removal Procedure

2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Removal Procedure
WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

Important:Β  When servicing the transfer case fluid, use only hand tools when removing the fill or drain plugs.

  1. Raise the vehicle. Refer to JACKING AND LIFTING in General Information.
  2. Remove the transfer case from the vehicle. Refer to TRANSFER CASE SHIELD REPLACEMENTΒ  .

    Important:Β  If the drain or fill plugs are damaged and need to be replaced, use only replacement plugs that are made from aluminum.

  3. Remove the transfer case fill plug.
    Fig 1: Removing Transfer Case Fill Plug
    G01468391Courtesy of GENERAL MOTORS CORP.

    Important:Β  When draining the transfer case oil, always use the proper container for draining.

  4. Remove the transfer case drain plug.
    Fig 2: Removing Transfer Case Drain Plug
    G01468392Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.